* {
  margin: 0;
  padding: 0;
}

#app {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
}

#popup {
  width: 200px;
  height: 100px;
  background-color: #fff;
  border: 1px solid #000;
  /* position: absolute;
  top: 0;
  left: 0; */
}